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Many people on this list would consider 22 IU to be a "trace" amount. At 05:27 PM 1/2/98 -0700, you wrote: >John Morey wrote: > >> In the article, the author says take a min. of 200 mg/day, yet most vitamin >> E is measured in iu not mg. What is the conversion factor? >> > >Hi John,Vitamin E is available both in natural and synthetic forms. >Furthermore, there are two groups of compounds which have vitamin E activitity >-- tocopherols and tocotrienols. > >The synthetic form has slightly lower biological activity than the natural >form, so scientists wanted to find a term that could be used worldwide to >measure vitamin E activity in all types of compounds. They came up with >"alpha-tocopherol equivalent." One mg d-alpha tocopherol = 1 alpha-TE. And 9 >mg = one IU (International Unit). > >Therefore 200 mg = 22.2 IU. > >Best, >Kathrynne > >-- >Kathrynne Holden, MS, RD >"Nutrition you can live with!" >Medical nutrition therapy >Tel: 970-493-6532 // Fax: 970-493-6538 > >